117109687 has 2 divisors, whose sum is σ = 117109688. Its totient is φ = 117109686.

The previous prime is 117109667. The next prime is 117109703. The reversal of 117109687 is 786901711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117109687 - 2²³ = 108721079 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117109667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58554843 + 58554844.

It is an arithmetic number, because the mean of its divisors is an integer number (58554844).

Almost surely, 2^117109687 is an apocalyptic number.

117109687 is a deficient number, since it is larger than the sum of its proper divisors (1).

117109687 is an equidigital number, since it uses as much as digits as its factorization.

117109687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 40.

The square root of 117109687 is about 10821.7229219750. The cubic root of 117109687 is about 489.2501191300.

The spelling of 117109687 in words is "one hundred seventeen million, one hundred nine thousand, six hundred eighty-seven".